The name of Heliopolis, or City of the Sun, was given by the Greeks to the Egyptian City of On. It was situated a little to the north of Memphis, was one of the largest cities of Egypt during the reign of the Pharaohs, and so adorned with statues as to be esteemed one of the first sacred cities in the kingdom. The temple dedicated to Re, was a magnificent building, having in front an avenue of sphynxes, celebrated in history, and adorned with several obelisks, raised by Sethosis Rameses, B.C. 1900.